Filter-paper supporter



(No Model.) i

' J.. Ov. ROBERTSON.

Filter Paper- Supporter.

No. 229,186.v v Patented June 22,4880.'

Fvg. i.

NJEI'EQS. PHGO-LITHOGRAFHER, WASHINGTON. D. C.

UNITED STATESi PATENT OFFICE.

JAMES O. ROBERTSON, OF FALL RIVER, MASSACHUSETTS.

FILTER-PAPER SUPPORTER.

SPECIFICATION forming part of Letters Patent No. 229,186, dated June 22, 1880.

Application filed April 26, 1880. (No model.)

To all whom it may concern Be it known that I, J AMES 0. ROBERTSON, of Fall River, in thc county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Filters, or in apparatus for supporting paper or sheet material while 'in use for ltering (by means of it) a decoction or a solution; and I do hereby declare the same to be described in the following specication and represented in the accompanying drawings, of whichf Figure l is a perspective view, and Fig. 2 a bottom View, of the article constituting my invention, it being especially designed for use in and with a common tunnel, such as is usually employed in the bunghole of a barrel or mouth of a bottle, and to aid in conveying a liquid into such.

The nature of my invention is duly set forth in the claim hereinafter made.

In the drawings, A represents a basket in the form of a frustum of a cone,vand composed of aseries of rings, c b c, and a series of wires, d e, all arranged and soldered together so as to form such basket, in manner as represented. From the upper or larger ring of the basket four sustainingarms, f, are projected radially, in manner as represented. So from the outer surface of the smallest or mouth ringfour lesser ears or projections, g, are also extended, they being, when the basket is inserted in the tunnel, to prevent contact of the basket at its arms will project over and rest upon the upper edge of suoli tunnel, and thereby support the basket in place. VOn such basket being charged with filtering-paper llaid in the form of a hollow cone within it, such basket will sustain the filtering-paper and hold it out of contact with the tunnel, and enable it to filter very much faster and to better advantage than would be the case were the paper laid in the tunnel in the usual waywithout any basket to sustain it.

In using the filtering-basket there is a clear space all around it and between it and the tunnel. As a consequence there is a free circulation of air around the iilter, whereby the process of ltering is not impeded, as it would be were the paper to adhere to the inner surface of the tunnel.

What I claim as my invention is The conical lter-paper supporter, substantially as described, consisting of the basket, its series of arms extending from its larger end or ring, and its series of projections cX- tending from its lesser ring, all arranged essentially as set forth.

JAMES O. ROBERTSON.

Witnesses:

R. H. EDDY, W. W. LUNT.- 

